<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            font-family: "kaiti";
        }
        form{
            width: 300px;
            height: 300px;
            margin: 100px auto;
            background-color: aquamarine;
            padding: 0 4px;
            box-sizing: border-box;
        }
        input{
            width: 290px;
            height: 50px;
            text-align: center;
            margin:4px auto;
            font-size: 20px;
            color: cornflowerblue;
        }
    </style>
</head>

<body>
    <form action="http://localhost:3000/doregester" method="post">
        <input type="text" name="username" placeholder="请输入用户名"><br>
        <input type="text" name="password" placeholder="请输入密码"><br>
        <input type="text" name="yzm" placeholder="请输入验证码"><img src="http://localhost:3000/yzm"><br>
        <input type="submit" value="注册">
    </form>
</body>

</html>